ArticlePloS one2013
Identification and functional characterization of Leishmania donovani secretory peroxidase: delineating its role in NRAMP1 regulation.
Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 19 citations in OpenAlex.
- Targeting and activation of macrophages in leishmaniasis. A focus on iron oxide nanoparticles.Frontiers in immunology · 2024Review
- Potential biomarkers of immune protection in human leishmaniasis.Medical microbiology and immunology · 2021Review
- TheThe Yale journal of biology and medicine · 2019Review
- Solute carrier protein family 11 member 1 (Slc11a1) activation efficiently inhibitsJournal of parasitic diseases : official organ of the Indian Society for Parasitology · 2017Article
- Identification and Characterization of miRNAs in Response toFrontiers in microbiology · 2017Article
- Iron in intracellular infection: to provide or to deprive?Frontiers in cellular and infection microbiology · 2013Review
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Leishmania silently evades host immune system and establish in the hostile environment of host macrophage phagolysosomes. For differentiation, growth and division parasite acquires divalent cations especially iron from the host nutritive pool. Natural resistance associated with macrophage protein1 (NRAMP1), a cation transporter that effluxes out divalent cations specifically iron from phagosomal milieu to the cytosol, to create ions deprived status for pathogenic microorganisms. The mechanisms of NRAMP1 regulation are largely unknown in leishmanial infections. In the present study, we identified a secretory Leishmania donovani peroxidase (Prx) that showed peroxidoxin like peroxidase activity and significantly reduced H(2)O(2), O(2).(-) and NO levels in LPS activated macrophages. Further, we also observed down regulated Nramp1 expression and concomitantly declined labile iron pool in activated macrophages treated with identified peroxidase. Prx also decreased levels of TNF-α, IFN-γ and IL-12 in LPS activated macrophages. These observations indicate a bifunctional protective role of secretory Prx; first it reduces redox activation of macrophages, and secondly it allows iron access to Leishmania by down regulating NRAMP1 expression.
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